理事单位简讯

清查放射源让百姓放心生活中听到“放射性”这个词你是不是会心情紧张?当看到黄黑两色的“放射源警示标志”时,你是不是会退避三舍?面对看不见、闻不到、摸不着的放射线,老百姓总是谈虎色变,但是在中国铝业河南分公司,这个“无形杀手”不仅被管得服服帖帖,而且在分析、检测等方面还发挥着不可替代的作用。7月22日,郑州市环保局在河南分公司召开了“清查放射源,让百姓放心”现场会,对该公司加强放射源管理,促进企业发展的经验和做法给予充分肯定。中国铝业河南分公司成立以来,严格执行国家有关安全生产及放射防护工作的法律、法规,积极探索、…     

联合特钢公司放射源的管理与监控

联合特钢公司为加强放射源管理,成立了辐射环境保护管理机构,通过建立健全各项辐射安全管理制度,加强对辐射作业现场、作业人员、辐射应急救援及放射源监控管理,使所有放射源得到了有效管理与监控,人员防护工作规范到位,杜绝了放射源事故的发生。     

包钢放射源库存管理系统的开发研究

在利用包钢同位素放射源库设施的基础上,研究开发出一个放射源库贮存源的微机管理系统,为每个放射源建立图象档案,为放射源的永久跟踪提供图象资料等.加强包钢各部门应用放射源的统一贮存、统一管理、安全使用,以适应和满足包钢生产的需要.     

与核技术应用项目有关的环境评价问题及对策

本文从辐射安全防护措旅和建设单位制定的规章制度两方面对核技术应用项目环境风险评价进行分析,针对放射源暂存库、换源事故、运输安全和源回收安全各个环节的关键问题以及人员培训和应急预案提出相应建议和对策,为确保辐射环境安全提供参考和借鉴。     

核子秤放射源检测与个人防护技术应用

阐述了核子秤放射源的检测仪器的应用以及作业场所人员设施防护,提出采用先进适用辐射检测仪器,配备安全可靠的个人防护用品,严格按照国家法规和行业技术规范实施放射源管理,实现辐射防护工作的机防、人防、技防三结合。     

“2011年稀土环保、放射防护及劳动卫生学术交流会暨2011年稀土环保与新技术论坛”在北京召开

6月24～26日,来自工信部、环保部、各地方稀土行业协会、稀土学会及全国各大学院校、研究院所以及企事业单位的专家及学者90多人参加了在北京举办的2011年稀土环保、放射防护及劳动卫生学术交流会暨2011年稀土环保与新技术论坛。稀土环保标准、放射标准和职业卫生标准的主要起草人员宗子就、叶长青、陈兴安三名专家应邀对《稀土工业污染物排放标准》、《电离辐射防护与辐射安全基本标准》及《稀土生产场所中放射卫生防护标准》分别进行了解读。     

六机六流小方坯连铸机液面控制系统

3结晶器液面检测装置工作原理采用放射活度为1.5mCs137放置在带状铅封放射源容器中发射出的γ射线束穿过结晶器及其中的钢液,被探测器接收,一部分射线被结晶器外水套、结晶器铜管、钢液、保护水口、探测器水套等物体吸收,一部分传送到探测器的表面,探测器接受到的射线强度与结晶器中的钢液液位成反比,见图2所示。1概述马钢股份公司第三炼钢厂新建一台六机六流方坯连铸机,其生产的140×140mm方坯将直接供高速线材、棒材轧机轧材。结晶器钢水液面测量与控制装置是六机六流方坯连铸机上的关键设备之一,采用放射源为Cs137的液面检测装置,与变频…     

基于计算机辅助工艺规划理论特钢企业标准管理研究与应用

长流程钢铁企业尤其是优特钢企业,企业核心是在质量保证的基础上做好质量控制,而质量控制的重心在于标准管理.标准管理包括判定标准、工艺参数的建立及更新.在介绍质量管理及标准管理的方法上,重点引入材质代码的概念,利用材质代码对优特钢企业种类繁多的钢种进行有效的标准管理.同时详细描述了材质代码的过程方法和原理,最后以济源钢铁为...     

某石化企业职业卫生情况调查

某石化企业是中石化下属的一家以炼油为主导产业的大型石油化工企业.为进一步了解石化企业职业病危害因素状况,为企业进行职业病预防和制定防护措施提供科学依据,2007-2009年对该企业的职业健康监护情况进行了调查.     

辐射及其防护

本文简述了辐射技术的应用在给人类创造巨大经济效应和社会效益的同时，也给人类带来了危害。论述了辐射防护的目的、原则、标准及内照射和外照射防护的措施。指出了严格执行放射卫生防护标准及有关的操作规程和安全规程，能保证个人及环境的安全，放射性工作的安全度并不低于其它工作。     

Voices of fear and anxiety and sadness and depression: The effects of speech rate and loudness on fear and anxiety and sadness and depression.

Two studies investigated the role of expressive vocal behavior (specifically, speech rate and loudness) in fear and anxiety and in sadness and depression. In the 1st study, participants spoke about personally experienced fear and anxiety-arousing and neutral events using 3 different voice styles: fast and loud, normal, and slow and soft. In the 2nd study, participants spoke about personally experienced sad or depressing and neutral events using the same 3 voice styles. In both studies, the participants' highest levels of subjective affective and cardiovascular (CV) arousal occurred when they spoke about the emotional events in a mood-congruent voice style: fast and loud in the case of fear and anxiety, and slow and soft in the case of sadness or depression. Mood-incongruent voice styles canceled the heightened levels of CV arousal normally associated with these negative emotions. The voice-style manipulation had no significant effect on the participants' levels of CV arousal during the neutral discussions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Synthesis and analysis of mixed chlorinated-fluorinated dibenzo-p-dioxins and dibenzofurans and assessment of formation and occurrence of the fluorinated and chlorinated-fluorinated dibenzo-p-dioxins and dibenzofurans

Despite the use of multimodal therapy, higher-grade glioma is still uniformly fatal in the adult population. There is a considerable difference between the length of survival in each given patient, even within the same tumor type and malignancy grade group, suggesting that there are factors that might differentially influence outcome. To identify such factors, 107 patients with anaplastic or malignant glioma were retrospectively investigated. Clinical parameters and paraclinical data on the p53, mdm2, and EGFR genes at the DNA or protein level were evaluated by univariate analysis and Cox proportional hazards regression modeling. Kaplan-Meier survival estimation demonstrated that immunohistochemical positivity for mdm2 protein in patients with anaplastic astrocytoma or with glioblastoma multiforme was associated with a shorter survival time (p = 0.02). P53 gene mutations and immunopositivity for the epidermal growth factor receptor (EGFR) protein were not significantly related to poor prognosis. The Cox proportional hazards model revealed immunohistochemical positivity for p53, mdm2, or for both of them, the presence of postoperative irradiation, and the extent of surgical resection of tumor to be variables significantly associated with prolonged survival. EGFR overexpression, age over 60 years, and Karnofsky performance score below 40 points did not significantly shorten survival time. In conclusion, the present study identified immunohistochemically detected mdm2-protein overexpression as a statistically significant negative prognostic parameter in patients bearing anaplastic or malignant glioma. Association analysis of variables revealed a possible correlation between mdm2 and p53, which is also consistent with the biological interaction mode of both proteins in vivo.     

Sexuality and aging--usual and successful

BACKGROUND: As aging research increasingly reflects an effort to dissociate true time-driven changes from those that can be improved, sexuality in later life remains largely unexplored. Several problems are evident. There is a lack of normative data, a lack of a conceptual framework relating to the biology, psychology, and sociology of sex, and an attitudinal resistance that obscures the entire topic. METHODS: We conducted a three-part instructional series on major topics involved with sexuality and aging. We surveyed our group of attendees (n 158, average age 68 for males, 65 for females) before and after the series. RESULTS: A remarkably robust sex life was evidenced by both the men and the women, even until advanced old age. Yet, a substantially decreased involvement was reported from 10 years earlier. Despite current activities, people of both sexes wished they were participating even more than they currently were. Impotency was identified as the major negative feature for the men; relationship problems were for the women. A questionnaire 6 months after the series reported improved sexual attitudes, but no change in sexual activities from the earlier survey. CONCLUSION: Sexuality is a major quality-of-life issue which persists into old age. Our study showed that the usual sexual practices reported by our group were not considered by them to be ideal. The intervention of this instructional series provided improved sexual attitudes but not performance. Additional studies are encouraged.     

Spondylolysis and spondylolisthesis and sports

Spondylolysis and spondylolisthesis occur predominantly in the lower lumbar spine. Besides congenital defects such as predisposition of spondylolysis the correlation between competitive sports activities and an increased incidence of spondylolysis is proved. In early stages, complete healing can be achieved by conservative treatment (abstinence from sports activities for 3 months, orthesis). Persistence of pain, neurologic symptoms and progression of vertebral slipping are indications for operative treatment (reconstruction of the isthmus, dorso-ventral spondylodesis). The exercise tolerance depends on the extent of instability, progression of vertebral slipping and clinical symptoms. The limits of exercise tolerance vary among the individual athletes and require the decision of the physician. Backstroke swimming, abdominal and back muscle strengthening exercises, and types of sport involving smooth movements are advisable. Sports education in school is possible without restriction in patients with stable spondylolysis and in those with spondylolisthesis without unfavourable concomitant factors.     

Larks and owls and health, wealth, and wisdom

OBJECTIVE: To test the validity of Benjamin Franklin's maxim "early to bed and early to rise makes a man healthy, wealthy, and wise." DESIGN: Cross sectional analysis of sleeping patterns in a nationally representative group of elderly people, and longitudinal investigation of mortality. SETTING: Eight areas in Britain (five in England, two in Scotland, and one in Wales). SUBJECTS: 1229 men and women aged 65 and over who in 1973-4 had taken part in a survey funded by the Department of Health and Social Security and for whom data on sleeping patterns, health, socioeconomic circumstances, and cognitive function had been recorded. MAIN OUTCOME MEASURES: Self reported income, access to a car, standard of accommodation, performance on a test of cognitive function, state of health and mortality during 23 years of follow up. RESULTS: 356 people (29%) were defined as larks (to bed before 11 pm and up before 8 am) and 318 (26%) were defined as owls (to bed at or after 11 pm and up at or after 8 am). There was no indication that larks were richer than those with other sleeping patterns. On the contrary, owls had the largest mean income and were more likely to have access to a car. There was also no evidence that larks were superior to those with other sleeping patterns with regard to their cognitive performance or their state of health. Both larks and owls had a slightly reduced risk of death compared with the rest of the study sample, but this was accounted for by the fact that they spent less time in bed at night. In the study sample as a whole, longer periods of time in bed were associated with increased mortality. After adjustment for age, sex, the presence of illness, and other risk factors, people who spent 12 or more hours in bed had a relative risk of death of 1.7 (1.2 to 2.5) compared with those who were in bed for 9 hours. The lowest risk occurred in people who spent 8 hours in bed (adjusted relative risk 0.8; 0.7 to 1.0). CONCLUSION: These findings do not support Franklin's claim. A "late to bed and late to rise" lifestyle does not seem to lead to socioeconomic, cognitive, or health disadvantage, but a longer time spent in bed may be associated with increased mortality.     

Craniometaphyseal and craniodiaphyseal dysplasia, head and neck manifestations and management

Mechanical allodynia (MA) following hand injury is a well-documented clinical problem. The purpose of this pilot study was to examine the relationship between hand MA and the upper limb tension test (ULTT). The ULTT mechanically stresses the neural structures from the C5/6/7 neural foramina to the median nerve distally. This study examined 29 subjects with unilateral hand MA before and after a 2-week neural self-mobilization programme. There was a significant difference between the subjects' affected and unaffected sides when tested using the ULTT, both in reproduction of symptoms and in reduced range of motion of the ULTT. Following the self-mobilization program, there was an improvement in the range of the ULTT, and subjects reported a reduction in their symptoms. Complete recovery was not obtained in all cases. The results of this study suggest that the ULTT is a useful tool both in assessment and treatment of subjects with hand MA.     

深云立交桥梁检测及加固改造

根据深云立交桥梁的检测结果，对该桥目前的整体状况、工作状态，及其使用情况做出综合评价，对桥的病害原因进行了分析，并提出合理的加固方案。     

关于摩尔浓度及其与硬度转换关系问题的讨论

众所周知，国际单位制物质的量采用摩尔(mol)表示，近几年出版的给排水专业书籍，为了与国际单位制接轨，逐渐将摩尔的使用频率不断提高，被给排水技术人员广泛应用的新版给排水设计手册，将表示物质浓度的单位“当量／升”或“毫克当量／升”．改为mol／l或mmol／l，虽然编者对其基本单元定义作了说明，但在实际运用上仍会出现误解，     

《儿子与情人》的语码转换与男女二元对立

劳伦斯小说《儿子与情人》一个鲜明的语言特色就是标准英语和当地方言频繁的语码转换。莫瑞尔用方言来对抗妻子,而妻子坚持用标准英语,偶尔也用方言来讽刺、挖苦丈夫。语码转换反映了劳伦斯男女二元对立的哲学思想。